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Air at the Jajce - Harmani station

Jajce, Central Bosnia Canton · Federation of Bosnia and Herzegovina

Network: Federal Hydrometeorological Institute · Station code: BA0040A

This year, up to yesterday (October 6)

at least

22 days

with an 8-hour average of ozone (O₃) above the target value of 120 µg/m³.

Readings are missing for part of the period, so the real number may be higher.

at least

12 days

with a daily average of particulate matter PM10 above the legal limit of 50 µg/m³.

Readings are missing for part of the period, so the real number may be higher.

Worst day: August 11, 2026, O₃ 149 µg/m³ as a daily average, 1.2 times the limit.

Daily average for 53 of 279 days · data for 2026 not yet finally verified · Yardstick: legal limits in the Federation of BiH (Pravilnik, Official Gazette FBiH 1/12, 50/19, 3/21)

All figures by year and month

Fair

Air now · Measured at 19:00

Latest values

Latest value: 19:00

Readings
PollutantValueLevel
PM1026.3 µg/m³Fair
O₃68.7 µg/m³Fair
SO₂6 µg/m³Good

How the air is changing

Over the last seven days there was more PM10 and SO₂ in the air than the week before.

  • PM10: average 18.7 µg/m³, week before 14.4 µg/m³
  • NO₂: too few readings to compare
  • O₃: average 52 µg/m³, week before 49.5 µg/m³
  • SO₂: average 8.6 µg/m³, week before 5.2 µg/m³

There are not enough readings to compare with the month before.

  • PM10: too few readings to compare
  • NO₂: too few readings to compare
  • O₃: too few readings to compare
  • SO₂: too few readings to compare

Show

Ozone O₃

68.7

Nowµg/m³

Measured at 19:00

50.5

Last 24 hoursµg/m³

measured in 92 % of hours · provisional

52

Last 7 daysµg/m³

measured in 100 % of hours · provisional

too few readings

Last 30 days

measured in 49 % of hours · provisional

too few readings

Last 12 months

measured in 15 % of hours · provisional

Days in 2023: O₃, 8-hour average above 120 µg/m³

59 days above the limit.

1102031JanFebMarAprMayJunJun 18: 138 µg/m³, above the limitJun 19: 137 µg/m³, above the limitJulJul 10: 122 µg/m³, above the limitJul 28: 120 µg/m³, above the limitJul 29: 121 µg/m³, above the limitAugAug 1: 147 µg/m³, above the limitAug 2: 129 µg/m³, above the limitAug 3: 145 µg/m³, above the limitAug 4: 127 µg/m³, above the limitAug 10: 130 µg/m³, above the limitAug 11: 136 µg/m³, above the limitAug 12: 151 µg/m³, above the limitAug 13: 161 µg/m³, above the limitAug 14: 163 µg/m³, above the limitAug 15: 150 µg/m³, above the limitAug 16: 148 µg/m³, above the limitAug 17: 138 µg/m³, above the limitAug 18: 131 µg/m³, above the limitAug 19: 127 µg/m³, above the limitAug 20: 153 µg/m³, above the limitAug 21: 155 µg/m³, above the limitAug 22: 163 µg/m³, above the limitAug 23: 170 µg/m³, above the limitAug 24: 144 µg/m³, above the limitAug 25: 134 µg/m³, above the limitAug 27: 122 µg/m³, above the limitAug 28: 171 µg/m³, above the limitAug 29: 155 µg/m³, above the limitSepSep 1: 128 µg/m³, above the limitSep 2: 132 µg/m³, above the limitSep 3: 135 µg/m³, above the limitSep 4: 143 µg/m³, above the limitSep 5: 143 µg/m³, above the limitSep 6: 152 µg/m³, above the limitSep 7: 157 µg/m³, above the limitSep 8: 163 µg/m³, above the limitSep 9: 157 µg/m³, above the limitSep 10: 156 µg/m³, above the limitSep 11: 155 µg/m³, above the limitSep 12: 154 µg/m³, above the limitSep 13: 155 µg/m³, above the limitSep 14: 128 µg/m³, above the limitSep 30: 131 µg/m³, above the limitOctOct 31: 124 µg/m³, above the limitNovNov 25: 161 µg/m³, above the limitNov 26: 148 µg/m³, above the limitNov 28: 149 µg/m³, above the limitNov 30: 197 µg/m³, above the limitDecDec 1: 216 µg/m³, above the limitDec 2: 227 µg/m³, above the limitDec 3: 181 µg/m³, above the limitDec 5: 130 µg/m³, above the limitDec 13: 166 µg/m³, above the limitDec 14: 160 µg/m³, above the limitDec 15: 143 µg/m³, above the limitDec 16: 154 µg/m³, above the limitDec 24: 130 µg/m³, above the limitDec 25: 138 µg/m³, above the limitDec 26: 121 µg/m³, above the limit
  • above the limit
  • below the limit
  • too few readings for the day
  • no O₃ data in the EEA database
Days above the limit with values (59)
  1. Jun 18 138
  2. Jun 19 137
  3. Jul 10 122
  4. Jul 28 120
  5. Jul 29 121
  6. Aug 1 147
  7. Aug 2 129
  8. Aug 3 145
  9. Aug 4 127
  10. Aug 10 130
  11. Aug 11 136
  12. Aug 12 151
  13. Aug 13 161
  14. Aug 14 163
  15. Aug 15 150
  16. Aug 16 148
  17. Aug 17 138
  18. Aug 18 131
  19. Aug 19 127
  20. Aug 20 153
  21. Aug 21 155
  22. Aug 22 163
  23. Aug 23 170
  24. Aug 24 144
  25. Aug 25 134
  26. Aug 27 122
  27. Aug 28 171
  28. Aug 29 155
  29. Sep 1 128
  30. Sep 2 132
  31. Sep 3 135
  32. Sep 4 143
  33. Sep 5 143
  34. Sep 6 152
  35. Sep 7 157
  36. Sep 8 163
  37. Sep 9 157
  38. Sep 10 156
  39. Sep 11 155
  40. Sep 12 154
  41. Sep 13 155
  42. Sep 14 128
  43. Sep 30 131
  44. Oct 31 124
  45. Nov 25 161
  46. Nov 26 148
  47. Nov 28 149
  48. Nov 30 197
  49. Dec 1 216
  50. Dec 2 227
  51. Dec 3 181
  52. Dec 5 130
  53. Dec 13 166
  54. Dec 14 160
  55. Dec 15 143
  56. Dec 16 154
  57. Dec 24 130
  58. Dec 25 138
  59. Dec 26 121

Values in µg/m³, limit 120 µg/m³.

Months of 2023

MonthDays above 120Highest 8 hNo readings
January0910
February0950
March01170
April01170
May01140
June2 above the number allowed1380
July3 above the number allowed1220
August23 above the number allowed1710
September15 above the number allowed1630
October1 above the number allowed1240
November4 above the number allowed1970
December11 above the number allowed2270

Values in µg/m³. ■ marks a month with at least one day above the limit; the number allowed applies to the whole year. “No readings”: days on which not a single reading came from the station.

Last 7 days, every hour: O₃ in µg/m³highest 114 µg/m³, latest 69 µg/m³ (19:00)050100150ThuFriSatSunMonTueWedlatest 69 (19:00)
measuredmodel estimate, not counted
Last 7 days, every hour: O₃ in µg/m³
Values as a table
Hour toµg/m³Note
Wednesday, 10/7
20:0071model estimate, not counted
19:0068.7
18:0081.7
17:0098.7
16:00105.3
15:00108.1
14:00104.5
13:0094.3
12:0080.4
11:0056.1
10:0024
09:0021.1
08:0015.3
07:0019.3
06:0021.3
05:0023.1
04:0023
03:0023.1
02:0013.9
01:0028.8
Tuesday, 10/6
00:0028.6
23:0032.2
22:0039.4
21:0037.7
20:0041.3
19:0076.3
18:0081.6
17:0097.8
16:00105.4
15:00100.6
14:0097.5
13:0094
12:0087.6
11:0065.7
10:0033.6
09:0025.6
08:0025.9
07:0028.2
06:0033
05:0031.5
04:0023.6
03:0024
02:0013.5
01:0026.8
Monday, 10/5
00:0026.4
23:0027.8
22:0031.8
21:0036.2
20:0061.1
19:0094.1
18:00113.7
17:00112
16:00109.8
15:00106.2
14:00105.5
13:0091.4
12:0080.3
11:0065.9
10:0033.6
09:0025.5
08:0025.1
07:0027.6
06:0031.9
05:0024.3
04:0025.2
03:0024.8
02:0013.6
01:0025.7
Sunday, 10/4
00:0023.8
23:0027.9
22:0034.9
21:0042.8
20:0067.4
19:0075.3
18:0092.4
17:00102.7
16:00102.4
15:0098.8
14:0098.9
13:0091.7
12:0080.5
11:0068.3
10:0034.9
09:0029.2
08:0027.6
07:0029.1
06:0027.1
05:0025.9
04:0023.2
03:0022
02:0013.3
01:0023.8
Saturday, 10/3
00:0022.8
23:0025.1
22:0027.9
21:0035.6
20:0043.5
19:0077.3
18:0096.8
17:00107.5
16:00105.4
15:00103.6
14:00102.1
13:0096.4
12:0085
11:0056
10:0036.8
09:0028.4
08:0025.9
07:0029.5
06:0028.2
05:0021.8
04:0023
03:0021.5
02:0013.6
01:0025.9
Friday, 10/2
00:0025.4
23:0033.5
22:0036.4
21:0037.9
20:0057.3
19:0077.8
18:00111.9
17:00106.5
16:00102.7
15:0097.8
14:0093
13:0085.2
12:0076
11:0057.7
10:0032.1
09:0028.8
08:0022.8
07:0024.5
06:0027.4
05:0024
04:0024.6
03:0024.6
02:0014.3
01:0027.6
Thursday, 10/1
00:0028.1
23:0028.7
22:0027.7
21:0042.7
20:0045.6
19:0078.8
18:00105.6
17:00105.4
16:0097.3
15:0098.6
14:0095.4
13:0089.8
12:0075.4
11:0048.8
10:0035.5
09:0025.8
08:0021.8
07:0025.9
06:0029.2
05:0028.2
04:0024.9
03:0021.6
02:0012.9
01:0024.1
Wednesday, 9/30
00:0027.3
23:0029.9
Last 30 days, highest 8-hour average of the day: O₃ in µg/m³highest 102 µg/m³, latest 93 µg/m³0501001509/99/169/239/30latest 93
too few readingstarget value, 120 µg/m³no data from the station
Last 30 days, highest 8-hour average of the day: O₃ in µg/m³
Values as a table
Dayµg/m³Note
Tue, 10/692.6provisional
Mon, 10/5101.6provisional
Sun, 10/492.8provisional
Sat, 10/396.7provisional
Fri, 10/293.9provisional
Thu, 10/193.3provisional
Wed, 9/3087.7provisional
Tue, 9/2995.3provisional
Mon, 9/2893.9provisional
Sun, 9/2779.6provisional
Sat, 9/2672.3provisional
Fri, 9/2576.3provisional
Thu, 9/2474.3provisional
Wed, 9/2365.2provisional
Tue, 9/22too few readings
Mon, 9/21no data from the station
Sun, 9/20no data from the station
Sat, 9/19no data from the station
Fri, 9/18no data from the station
Thu, 9/17no data from the station
Wed, 9/16no data from the station
Tue, 9/15no data from the station
Mon, 9/14no data from the station
Sun, 9/13no data from the station
Sat, 9/12no data from the station
Fri, 9/11no data from the station
Thu, 9/10no data from the station
Wed, 9/9no data from the station
Tue, 9/8no data from the station
Mon, 9/7no data from the station
Last 12 months, monthly average: O₃ in µg/m³highest 78 µg/m³, latest 52 µg/m³050100DecFebAprJunAugOcthighest 78latest 52
Last 12 monthsthis month so fara year earliermonth with days without data from the station
Last 12 months, monthly average: O₃ in µg/m³
Values as a table
Monthµg/m³a year earlierNote
October 2026 so far52.4measured in 100 % of hours · provisional
September 2026too few readingsmeasured in 30 % of hours · provisional · 20 days without data from the station
August 202678.2measured in 97 % of hours · provisional
July 2026too few readingsmeasured in 34 % of hours · provisional
June 2026too few readings1 day without data from the station
May 2026too few readings
April 2026too few readings4 days without data from the station
March 2026too few readings
February 2026too few readings
January 2026too few readingstoo few readings2 days without data from the station
December 2025too few readings34
November 2025too few readings35.2

O₃ by year

Yardstick: legal limits in the Federation of BiH (Pravilnik, Official Gazette FBiH 1/12, 50/19, 3/21)

Measure2026*20252024
Days with 8-hour average above 120 µg/m³ (target value 25)≥ 22²0²261
Annual average, µg/m³too fewtoo few115.4
Highest 8-hour average, µg/m³149August 1186January 3313July 19
Hours measured20 %2 %96 %
Days without any reading from the station27011

* 2026 up to October 6; the average since the start of the year is not yet an annual average.

The monitoring networks have not yet finally verified this year’s data. The EEA publishes verified values once a year.

≥ means at least: more than a tenth of the days or hours are missing, so the real number may be higher.

² Too few readings to compare with the number allowed: the figure covers only what was measured.

■ and a figure in red: more than is allowed for the whole year.

The column for 2023 is shown on wider screens.

The worst days of 2023

DayHighest 8 hTimes the limit
Dec 2, 20232271.9 ×
Dec 1, 20232161.8 ×
Nov 30, 20231971.6 ×
Dec 3, 20231811.5 ×
Aug 28, 20231711.4 ×

Daily average in µg/m³, daily limit 120 µg/m³. Days with the same unverified value over many hours are not on this list.

Outages in the last 12 months

Every period of at least 24 hours in which no reading arrived from this station.

Days without a reading: 36

8 outages, 853 hours in total in the last 12 months.

Timeline of outages from October 7, 2025 to today

FromToDuration
Sep 1, 2026 09:00Sep 22, 2026 09:0021 days
Jul 1, 2026 09:00Jul 2, 2026 09:0024 hours
Jun 9, 2026 05:00Jun 11, 2026 11:002 days
May 23, 2026 01:00May 24, 2026 08:0031 hours
Apr 10, 2026 04:00Apr 13, 2026 11:003 days
Apr 4, 2026 12:00Apr 7, 2026 09:003 days
Jan 26, 2026 15:00Jan 28, 2026 14:0047 hours
Jan 9, 2026 14:00Jan 11, 2026 11:0045 hours

Calculated from the hourly values the EEA publishes. If late values arrive afterwards, an outage gets shorter or disappears.

Who is responsible

Air quality in the Federation of BiH is monitored by three networks of stations: the federal, the cantonal and the municipal one (Air Protection Act, Official Gazette FBiH 72/24, Art. 12 to 16).

Federal Hydrometeorological Institute (FHMZ)
Runs the federal network, collects the data of all networks and publishes it. It issues a report every month and, every year by 31 July, the annual air quality report (Art. 14, 19 and 63).
Canton
Sets up the cantonal network and is responsible for the measures. When limit values are exceeded, it adopts an air quality plan. When warning or alert thresholds are at risk of being exceeded, it adopts a short-term intervention plan. When the information threshold or a concentration dangerous to health is exceeded, it informs the public (Art. 15, 22, 25, 27 and 61).
Municipality
May run its own stations with the consent of the canton and must publish their results (Art. 16 and 17).
Inspectorates
The inspectorates of the Federation, the canton and the municipality supervise the law and the measures, each within its remit (Art. 71).

What the law requires when a limit is exceeded

A limit value is not a recommendation. The deadline for meeting the limit values for sulphur dioxide, nitrogen dioxide and particulate matter expired on 1 January 2021. Since then only the number of exceedances that the Pravilnik allows applies (Official Gazette FBiH 1/12, Annex X). The Air Protection Act adds that limit values, once met, must not be exceeded again (Art. 5(4)).

The law allows: for PM10 at most 35 days a year above 50 µg/m³, for sulphur dioxide at most 24 hours above 350 µg/m³ and at most 3 days above 125 µg/m³, for nitrogen dioxide at most 18 hours above 200 µg/m³ and no day with a daily average above 85 µg/m³ (Annex X).

When limits are exceeded, the canton adopts an air quality plan with measures that shorten the period of exceedance. The plan is published within eight days of adoption (Art. 8, 25, 26 and 63).

The alert thresholds are 500 µg/m³ for sulphur dioxide and 400 µg/m³ for nitrogen dioxide over three hours in a row, and 300 µg/m³ for PM10 and 280 µg/m³ for PM2.5 as a daily average (Pravilnik, Annex XIV, amended in Official Gazette FBiH 3/21). When such a situation threatens, the canton must have a short-term intervention plan. It can restrict traffic, construction work, the operation of plants and heating (Art. 27 and 28).

When the information threshold or a concentration dangerous to health is exceeded, the competent cantonal authorities inform the public through radio, television, newspapers and the internet: where, since when, how much was measured, what is expected and how to protect oneself (Art. 61 and 62).

We show measured values only. Whether an episode has been declared is decided by the competent authorities, who publish it on their own pages.

The limit values in BiH match the EU rules of 2008. Since 2021 the World Health Organization has recommended much lower values, for PM10 45 µg/m³ a day and 15 µg/m³ a year. From 2030 the EU lowers the annual PM10 limit to 20 µg/m³ (Directive (EU) 2024/2881).

We checked the rules against the published texts on 7 October 2026.

Where the data comes from

Measured by Federal Hydrometeorological Institute. We take the values from the European Environment Agency (EEA) under the CC BY 4.0 licence.

Values marked provisional have not been fully checked by the network yet. The EEA publishes verified data for the previous year once a year, usually by the end of September.

An hourly value is the average of one hour. We show the end of the hour: the value to 18:00 was measured from 17:00 to 18:00.

A day runs from midnight to midnight local time.

We only show an average when at least three out of four hours in the period have a reading. The EU air quality directive requires this for daily averages, and we apply the same rule to longer periods. We compare an annual average with the EU limit only once 90 % of hours are measured, as the directive requires. For 12 months and for a year we ask for more: if less than 90 % of hours are measured, every full calendar month needs readings for at least half of its hours. Otherwise a whole season could be missing from the average, such as summer, when ozone is highest.

We do not call a difference of up to 10 % a change, nor one of up to 1 µg/m³ at low levels, because weather and measurement uncertainty alone cause differences that size.

When a station sends no reading, the EEA sometimes fills the hour with a model estimate. We draw those hours dashed and leave them out of every average.

The limits are the legal limits of the Federation of BiH (Pravilnik, Official Gazette FBiH 1/12, 50/19 and 3/21, Annexes X and XIV). They match EU Directive 2008/50/EC. When more than a tenth of the days or hours are missing, the number of exceedances can only be higher, so we write “at least” in front of it.

How we measure

samoEKO is a brand of samoLabs, Juelich.